42705

Appears in sequences

• Molien series for group Gamma_{3,0}(2).at n=26A027632
• a(n)=a(n-1)+a(m), where m=2n-2-2^(p+1) and 2^p<n-1<=2^(p+1), for n >= 4.at n=39A050063
• Truncated square pyramid numbers: a(n) = Sum_{k = n..2*n} k^2.at n=26A050409
• Number of (n+1) X 3 0..3 arrays with every 2 X 2 subblock having nonzero determinant and commuting with every horizontal or vertical neighbor.at n=11A206337
• Number of n X 3 0..1 arrays with every element equal to 1, 2 or 4 king-move adjacent elements, with upper left element zero.at n=21A297853
• Irregular triangle read by rows: T(n, k) is the q-multinomial coefficient defined by the k-th partition of n in Abramowitz-Stegun order, evaluated at q = 8.at n=9A347490
• Number of tilings of a (k*(3k-1)/2, k*(3k+1)/2)-benzel by bones.at n=2A364134
• Numbers k such that 7*k+1 divides 7^k+1.at n=5A381258