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 A088055 a(n) = (n^(n+1)-1)/(n-1) - 1 - n!*n^n, or A031972(n) - A061711(n): sums of geometric progressions minus products of arithmetic progressions. 0
 0, 2, 123, 5804, 371095, 33536334, 4149695921, 676438175160, 140586711200271, 36287988888888890, 11388728579602327129, 4270826370748686175140, 1886009588224061851054127, 968725766842917544760889030 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Original definition: a(n) = G(n) - A(n), where G(n) = Sum of the first n terms of a geometric progression with first term n and common ratio n. A(n) = Product of first n terms of an arithmetic progression with first term n and common difference n. LINKS FORMULA a(n) = A031972(n) - A061711(n) = (n^(n+1)-1)/(n-1) - 1 - n!*n^n. CROSSREFS Cf. A061711, A031972. Sequence in context: A249504 A230586 A024244 * A065705 A012870 A183720 Adjacent sequences: A088052 A088053 A088054 * A088056 A088057 A088058 KEYWORD nonn AUTHOR Amarnath Murthy, Sep 20 2003 EXTENSIONS Corrected and extended by David Wasserman, Jun 27 2005 Edited by M. F. Hasler, Feb 12 2013 STATUS approved

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Last modified December 3 18:08 EST 2022. Contains 358536 sequences. (Running on oeis4.)