1,5
Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
Cf. A052437, ..., A052440.
Sequence in context: A008424 A023920 A096306 this_sequence A025602 A088126 A040327
Adjacent sequences: A052438 A052439 A052440 this_sequence A052442 A052443 A052444
nonn,more
Eric Weisstein (eric(AT)weisstein.com)
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