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A294388 a(n) = n! * [x^n] exp(Sum_{k=1..n} sigma_n(k) * x^k). 2
1, 1, 11, 223, 12193, 1548841, 501460531, 355752425239, 558112176198305, 2023318561014654769, 15928875457207423721731, 268023268481704204728199711, 10084410400965244525857478169665, 817174553170437003290060071895273113 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Seiichi Manyama, Table of n, a(n) for n = 0..75

CROSSREFS

Main diagonal of A294296.

Cf. A252782.

Sequence in context: A142541 A295542 A089917 * A281257 A187646 A170948

Adjacent sequences:  A294385 A294386 A294387 * A294389 A294390 A294391

KEYWORD

nonn

AUTHOR

Seiichi Manyama, Oct 30 2017

STATUS

approved

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Last modified August 19 04:02 EDT 2019. Contains 326109 sequences. (Running on oeis4.)