25390

Appears in sequences

• Numbers whose base-5 representation contains exactly three 0's and three 3's.at n=24A045202
• Numbers that contain as proper substrings every maximal prime power dividing them.at n=18A059401
• Number of n X n arrays of squares of integers summing to 22 with every element equal to at least one neighbor.at n=2A146516
• Integers k such that 3*k!!! - 1 is prime where k!!! is A007661(k).at n=50A271396
• Expansion of Sum_{p prime, i>=1} p^i*x^(p^i)/(1 - x^(p^i)) / Product_{j>=1} (1 - x^j).at n=23A281906
• Number of permutations of [n] avoiding {4231, 1324, 1234}.at n=11A294763
• Numbers k such that 6*10^(2*k) + 6*10^k + 1 is prime.at n=8A309741
• G.f. = ((2+3*x)/(1-x^2-x^3))^2.at n=21A350602