-1177

Appears in sequences

• Triangle read by rows, T[n,2i-1]=2T[n-1,i],T[n,2i]=2k-1-2T[n-1,i].at n=54A138583
• Inverse Euler transform of the unsigned Moebius function A008966.at n=46A320782
• Nearest integer to 1/delta_n, where the delta_n are coefficients in Sitaramachandrarao's series for the Riemann zeta function.at n=7A330552
• Counterclockwise square spiral constructed using the integers so that a(n) plus all other numbers currently visible from the current number equals n; start with a(0) = 0.at n=34A357985
• a(n) = Sum_{d|n} (-1)^(d-1) * d^(n/d-1).at n=23A359812