24727

Appears in sequences

• Numerators of convergents to log_2(3) = log(3)/log(2).at n=9A005663
• Pseudoprimes to base 3.at n=37A005935
• Pseudoprimes to base 11.at n=40A020139
• Strong pseudoprimes to base 9.at n=26A020235
• Strong pseudoprimes to base 12.at n=17A020238
• Strong pseudoprimes to base 26.at n=11A020252
• Strong pseudoprimes to base 33.at n=10A020259
• Strong pseudoprimes to base 44.at n=21A020270
• Strong pseudoprimes to base 50.at n=16A020276
• Strong pseudoprimes to base 57.at n=19A020283
• Strong pseudoprimes to base 70.at n=19A020296
• Strong pseudoprimes to base 76.at n=21A020302
• Strong pseudoprimes to base 81.at n=36A020307
• Strong pseudoprimes to base 83.at n=16A020309
• Strong pseudoprimes to base 85.at n=18A020311
• Strong pseudoprimes to base 98.at n=23A020324
• a(n) = Sum_{i=0..n} Sum_{j=0..i} T(i,j), T given by A026584.at n=11A026598
• Odd 10-gonal (or decagonal) numbers.at n=39A028993
• Pell pseudoprimes: odd composite numbers n such that P(n)-Kronecker(2,n) is divisible by n.at n=28A099011
• Row 5 of table A113143; equal to INVERT of quintic (or 5-fold) factorials shifted one place right.at n=6A113146