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A025104 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (composite numbers), t = (odd natural numbers). 0
12, 20, 58, 78, 154, 190, 307, 361, 525, 599, 829, 927, 1235, 1361, 1742, 1898, 2358, 2546, 3112, 3336, 4020, 4284, 5073, 5379, 6279, 6629, 7675, 8073, 9246, 9694, 11000, 11500, 12945, 13499, 15089, 15699, 17479, 18149, 20131, 20865, 23018, 23818, 26148, 27016 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..44.

CROSSREFS

Sequence in context: A109788 A341361 A181701 * A163323 A060159 A167351

Adjacent sequences: A025101 A025102 A025103 * A025105 A025106 A025107

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified December 1 23:44 EST 2022. Contains 358485 sequences. (Running on oeis4.)