id:A071424 - OEIS Search Results

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a(n) = a(n-1) + number of decimal digits of n!. Number of decimal digits of concatenation of first n factorials.

+0
1

1, 2, 3, 5, 8, 11, 15, 20, 26, 33, 41, 50, 60, 71, 84, 98, 113, 129, 147, 166, 186, 208, 231, 255, 281, 308, 337, 367, 398, 431, 465, 501, 538, 577, 618, 660, 704, 749, 796, 844, 894, 946, 999, 1054, 1111, 1169, 1229, 1291, 1354, 1419, 1486, 1554, 1624 (list; graph; listen)

	OFFSET	`1,2`
	MATHEMATICA	`Do[s=s+Length[IntegerDigits[n! ]]; Print[s], {n, 1, 128}]`
	CROSSREFS	`Cf. A058183.` `Sequence in context: A137179 A096777 A125811 this_sequence A008762 A101018 A006336` `Adjacent sequences: A071421 A071422 A071423 this_sequence A071425 A071426 A071427`
	KEYWORD	`easy,nonn,base`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), May 27 2002`

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Last modified March 20 09:10 EDT 2010. Contains 173642 sequences.

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