158970

Appears in sequences

• Numbers with exactly 5 distinct prime factors each of which is a palindrome.at n=33A046403
• Expansion of (1-x)/(1+x-2*x^2-x^3).at n=20A078038
• Number of palindromic compositions of n with parts in {1,2,4,6,8,10,...}.at n=40A276055
• a(n) = a(n-1) + 2*a(n-2) - a(n-3), where a(0) = 2, a(1) = 4, a(2) = 7.at n=19A287381
• Irregular triangle read by rows: T(n, k) is the number of n-step closed walks on the hexagonal lattice having algebraic area k.at n=55A353091