18874369

Appears in sequences

• a(n) = T(7,n), array T given by A048472.at n=18A048479
• a(n) = 2*a(n-1) - 1 with a(0) = 10.at n=21A083705
• Pierpont 4-almost primes: numbers with exactly 4 prime divisors, not necessarily distinct, of the form 2^K*3^L + 1.at n=21A111344
• Rows of A114000 expressed as decimals (a sequence related to the number of divisors of 2n-1).at n=24A114001
• a(n) = 9*8^n+1.at n=7A199556