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A128939 Maximal product over partitions of n into parts of the form 3k+1. +0
1
1, 1, 1, 4, 4, 4, 7, 16, 16, 16, 28, 64, 64, 64, 112, 256, 256, 256, 448, 1024, 1024, 1024, 1792, 4096, 4096, 4096, 7168, 16384, 16384, 16384, 28672, 65536, 65536, 65536, 114688, 262144, 262144, 262144, 458752, 1048576 (list; graph; listen)
OFFSET

1,4

FORMULA

Conjecture. a(n)=1 if n<4, else a(n)=4^[n/4] if n<>4m+3, else a(n)=7*4^([n/4]-1), where [...] denotes the Floor function. (This has been verified up to n=40.)

CROSSREFS

Cf. A000792, A034893, A094958.

Sequence in context: A023958 A137751 A010658 this_sequence A105352 A132200 A110757

Adjacent sequences: A128936 A128937 A128938 this_sequence A128940 A128941 A128942

KEYWORD

nonn

AUTHOR

John W. Layman (layman(AT)math.vt.edu), Apr 27 2007

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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