22045

Appears in sequences

• Number of partitions of n into parts not of the form 25k, 25k+7 or 25k-7. Also number of partitions with at most 6 parts of size 1 and differences between parts at distance 11 are greater than 1.at n=38A036006
• Smallest number k such that in its decimal representation the first n digits of Pi=3.14... are contained in 11^k.at n=8A096935
• Partial sums of floor(n^3/2).at n=20A173704
• Number of 5-element nondividing subsets of {1, 2, ..., n}.at n=26A187492
• G.f.: 1/sqrt(1-10*x^2 + x^4/(1-8*x^2)) + x/(1-9*x^2).at n=10A200376
• Composite numbers coprime to 6 such that A179382(n) = A000265(n-1), the odd part of n-1.at n=35A225913
• E.g.f.: (sec(x) - tan(x)) / (2 - exp(x)).at n=7A347070
• Expansion of 1/(1 - x/(1 - 8*x^4)^(1/4)).at n=22A373509
• Stellated octagon numbers: a(n) = 20*n^2 + 8*n + 1.at n=33A381196