A185257 - OEIS

%I #10 Dec 28 2024 22:09:23

%S 8,23,46,59,108,106,156,182,346,348,542,766,727,717,1071,1153,977,

%T 1640,1739,1703,2019,1841,1834,2628,2668,2804,2278,2679,2817,2918,

%U 4105,4243,4921,4028,5936,5528,4728,7302,8576,7453,7184,9516,9630,11107,11828,11889,12241

%N A185243(n) is the a(n)-th triangular number.

%C See A185128 for further information.

%D Albert H. Beiler, Recreations in the theory of numbers, New York, Dover, (2nd ed.) 1966, p. 197, no. 8.

%H N. J. A. Sloane, <a href="/A185128/a185128.jpg">Annotated scan of Beiler's Table 81</a>, based on page 197 of Beiler's "Recreations in the Theory of Numbers: The Queen of Mathematics Entertains", New York, Dover, First ed., 1964.

%Y Cf. A000217, A185128, A185129, A185223, A185233, A185243, A185253, A185258.

%K nonn

%O 1,1

%A _Martin Renner_, Jan 20 2012

%E Edited (with a simpler definition) by _N. J. A. Sloane_, Dec 28 2024