25478

Appears in sequences

• Number of partitions of n into parts not of the form 17k, 17k+7 or 17k-7. Also number of partitions with at most 6 parts of size 1 and differences between parts at distance 7 are greater than 1.at n=40A035968
• Numbers k such that 11*7^k + 2 is prime.at n=23A083724
• a(n) = 2^(2n-1) - (n+2)*3^(n-2).at n=7A125586
• 3-comma numbers: n occurs in the sequence S[k+1]=S[k]+10*last_digit(S[k-1])+first_digit(S[k]) for three different splittings n=concat(S[0],S[1]).at n=32A166513
• Number of -1..1 arrays x(0..n+1) of n+2 elements with zero sum and no two neighbors summing to zero.at n=15A199825
• Positions of records in A249431.at n=11A249432