43054
domain: N
Appears in sequences
- a(n) = (5*n+1)*(5*n+4).at n=41A001545
- Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 12 (most significant digit on right).at n=14A029505
- Position of 7^n among 7-smooth numbers (A002473).at n=19A232093
- Sequence lists numbers k > 1 such that k^4 == d(k) (mod sigma(k)), where d = A000005 and sigma = A000203.at n=29A323251
- Number of integer partitions of n whose run-lengths are not unimodal.at n=46A332281
- Numbers k such that k^2 + {1,3,7,13} are prime.at n=10A356109
- Numbers k such that k^2 + {1,3,7,13,31} are prime.at n=3A356110