2,2

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

W. F. Pickard, Tables for the step-by-step integration of ordinary differential equations of the first order, J. ACM 11 (1964), 229-233.

Sequence in context: A009068 A157166 A074040 this_sequence A077206 A061174 A115918

Adjacent sequences: A002400 A002401 A002402 this_sequence A002404 A002405 A002406

nonn

N. J. A. Sloane (njas(AT)research.att.com).