88575
domain: N
Appears in sequences
- a(n) is the least k in A002977 with a gap of n. Also n + a(n) is the least k in A007448 which is repeated n times.at n=39A058361
- Number of vertices in Sierpiński triangle of order n.at n=10A067771
- a(n) = 3*a(n-1) + a(n-2) - 3*a(n-3).at n=11A103425
- a(1)=1; then successively add 1, divide by 2, add 2 and then total up the last 4 terms.at n=43A112027
- a(0) = 2, a(n) = 3*a(n-1) - 3.at n=11A115098
- a(n) = 3*A132357(n).at n=9A135264
- a(n) = (3/2)*(1+(-3)^(n-1)).at n=11A165553
- n*(n^10+1)/2.at n=3A168119