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Search: id:A024378
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A024378 a(n) = 2nd elementary symmetric function of the first n+1 positive integers congruent to 1 mod 4. +0
1
5, 59, 254, 730, 1675, 3325, 5964, 9924, 15585, 23375, 33770, 47294, 64519, 86065, 112600, 144840, 183549, 229539, 283670, 346850, 420035, 504229, 600484, 709900, 833625, 972855, 1128834, 1302854, 1496255, 1710425, 1946800, 2206864, 2492149 (list; graph; listen)
OFFSET

1,1

FORMULA

n(n+1)(12n^2+8n-5)/6.

CROSSREFS

Sequence in context: A015994 A141951 A049079 this_sequence A112461 A106105 A036947

Adjacent sequences: A024375 A024376 A024377 this_sequence A024379 A024380 A024381

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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


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