81766

Appears in sequences

• a(n) = a(n-1) + a(n-2) + n, a(0) = a(1) = 1.at n=21A030119
• Indices of primes in sequence defined by A(0) = 43, A(n) = 10*A(n-1) + 33 for n > 0.at n=33A101730
• Numbers k such that k and k^2 use only the digits 1, 5, 6, 7 and 8.at n=11A137060
• Number of strictly increasing arrangements of 5 nonzero numbers in -(n+3)..(n+3) with sum zero.at n=30A188124
• Number of multisets of exactly two nonempty words with a total of n letters over n-ary alphabet such that within each prefix of a word every letter of the alphabet is at least as frequent as the subsequent alphabet letter.at n=10A294004