1,2

E. C. Zeeman, Levels of structure in catastrophe theory..., pp. 533-546 of Proc. Intern. Congr. Math., Vol. 2, 1974.

Adjacent sequences: A013657 A013658 A013659 this_sequence A013661 A013662 A013663

Sequence in context: A076802 A024374 A065219 this_sequence A124203 A077665 A025062

nonn

njas