71302

Appears in sequences

• Numbers that have decimal expansion c(1)c(2)...c(n) with distinct digits that satisfy c(1) <> 0, c(1) is the largest digit, and for each i in 1..n there is j in 0..2 such that c(i) == 3*c(i-1) + j (mod 10) (with c(0): = c(n)).at n=28A336661
• Number of ways to write n as an ordered sum of 7 primes.at n=43A340963
• a(n) = (2*n^4 - 6*(-1)^n*n^2 - 2*n^2 + 3*(-1)^n - 3)/96.at n=43A350050
• a(n) is the sigma irregularity of the n-th power of a path graph of length at least 3*n.at n=20A363706